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Sig Sauer ASP20 |
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mercs 
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Joined: 25 Apr 2020 Location: Stratford Status: Offline Posts: 341 |
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 Posted: 06 Jan 2023 at 6:08am |
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This could get interesting, and looks like fun, subject gets techo real quick.
Pest control: I learn scope and rifle at 25yard and 35 yard and everything else is a quick holdover thought rather than a reference. I have X-ACT app from Hawke, came with a Vantage scope but is a free download. Never used it much as the scope failed x3 on my springers so I took a refund. (nice scopes no complaints) I will check out gun chair but in the meantime have run a comparisons with some range observations. Yesterday I had drop downs setup from 35 - 55 yards. 1.575 inch target zone (40mm) session 1 .22 Sig zeroed at 55 yards from previous trials. 55 yard target dropped 50 yard target dropped 45 yard target missed 40 yard target missed 35 yard target missed session 2 .22 Sig zeroed at 35 yards. 35 yard target dropped (POA bottom of target zone) 40 yard target dropped 45 yar target dropped 50 yard target dropped 55 yard target dropped (POA top of target zone) Double target zones gives a difference of 3.15 inch POA from first to last shot. I think there was some good validation between physical and calculated numbers. X-ACT calculation graph shows a pellet drop from 40 to 55 yards of just under 3 inches. Details Pellet RWS Super Field 15.9 grains 1.03 grammes Performance 780 fps 21.49 ft/lbs measured this morning Scope Zero Tech 3-12x40 set at x12. No default setting in the X-ACT app but Hawke Vantage was similar. I tried a few scope models and there was about 1/2 inch variation. Yes agree, the scope height is very sensitive so I measured to 2 decimal places. 1.85 inches
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kruzaroad
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Joined: 03 Jul 2022 Location: Hastings 4 now Status: Offline Posts: 2622 |
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Posted: 06 Jan 2023 at 7:13am |
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Yep I ended up at 3.94cm (1.55 inch) for scope height. With that said, I had to measure from bore center to top of barrel, then as the barrel is a tad higher than the piston cylinder, measure how much higher that was and subtract it from the first measurement.
After that measure from top of piston cylinder (receiver?) to center of scope. Very nearly just put 4cm in data but every mil affects the out come. Hawk don't do updates for chairgun any more so be aware of that. You cant update pellet database and stuff online and if its not in the list will have to put it in manually. Not a biggie. I'm not recommending it either, it just happens to be what I am using as it was designed for air guns. In order to keep it all on a level footing, what about we do 15m out to 50m at 5m intervals. Aiming at bulls and recording the mildot drop and/or cm/inch drop. I'm using meters as most scopes will be mildot and not moa (although for some weird reason my hawk airmax is mildot on retical and moa for adjustment. There is a a way of setting up to correct that if anyone is interested I'll find the video and post it) 15m/16.4yd 20m/21.87yd 25m/27.34yd 30m/32.81yd 35m/38.28yd 40m/43.74yd 45m/49.21yd 50m/54.68yd |
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kruzaroad
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Posted: 07 Jan 2023 at 5:04pm |
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Re sighted sig to 28m.
Put 1.5inch spinner targets at random distance out to 46m (fence ended there) Used retical info I've spent last three days mesmerising from gunchair for hold over. Hit every time. Hope as accurate over 46m. After sighted in with 4.50mm tried 4.49mm and they were just as accurate. |
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Ralph
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Joined: 21 Sep 2022 Location: Orewa Status: Offline Posts: 51 |
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Posted: 08 Jan 2023 at 2:06am |
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Just a bit of useless information. The stock on the Sig Asp20 was patterned after the SIG Sauer SSG 3000 sniper rifle
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Sig Sauer ASP20 .177
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mercs
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Joined: 25 Apr 2020 Location: Stratford Status: Offline Posts: 341 |
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Posted: 16 Jan 2023 at 2:12pm |
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Clear warm day with a pleasant breeze. Measured pellet drop did not always match the calculated values. General trend was there but 20mm difference at 50 metres. I had a fixed target and moved shooting position on not so flat land so not the best technique. I expect if all the required details are known and entered the calculator would be spot on. The required measured 80mm holdover has merit with experience at local 50 metre rifle range. The measured and calculated 40 metre result is also backed up by field experience off the fenceposts. 20 to 35 metres just shoot without thinking about correction. When close at 15 metre I would normally go 20mm high so much closer to calculated value and shooting up into a tree would need all of that and some. I was liking the groups from the JSB Jumbo Express pellets so will do some more work with them and see if I can get some numbers to line up using the turret MOA adjustment as I am becoming confident with my new scope.  
Distance meter Leupold RX1300i Chronometer XCORTECH X3200 Calculator X-ACT
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Myson
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Joined: 07 Mar 2016 Location: Feilding Status: Offline Posts: 224 |
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Posted: 17 Jan 2023 at 1:13am |
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Excellent tests mercs!
I'm waiting for my pellet headsize checker to arrive from UK before I continue testing the SIG because I'm convinced my SIG is very headsize fussy? I want to try each headsize from a new tin of H&N's Baracuda Match 4.50 (4.46mm - 4.53mm) to see if there's one headsize that consistently gives tightest groups. My gut feel is that those headsizes below 4.50mm will be better than those above...? We'll see.... |
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https://www.youtube.com/watch?v=eq7jVyBfFqE
Air Arms S510 US .22 Air Arms S410 .22 Weihrauch HW97KT .177 Weihrauch HW95 .177 |
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kruzaroad
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Joined: 03 Jul 2022 Location: Hastings 4 now Status: Offline Posts: 2622 |
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Posted: 17 Jan 2023 at 4:05am |
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I'd put money on 4.53mm not shooting well at all.
4.52mm being tad erratic. I found the 4.50mm and 4.49mm grouping best and holding target in AA. I'd be keen to see your results. There seems to be a lot of mention of baracuda, and I be interested in results. Great review mercs, I'll try get one up on AA and exact just getting ready to shift at moment so not as much time as id Like. Still got enough room for shooting targets where I'm off too. |
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Myson
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Posted: 17 Jan 2023 at 5:28am |
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Thanks Kruza.
Interesting.... we'll see what headsize is best for my barrel. The reason I'm thinking one headsize will be best is that I'm getting fliers in some of my current groups with the "4.50" tin and I reckon those fliers are most probably due to unsuitable headsizes in the tin? I've weighed the pellets into three weight groups (Lite, Medium and Heavy) and I get fliers in all three weight groups so it's probably not a difference of weight - more like a difference in headsize that's causing the odd flier or two. The good thing is that if I ignore the fliers, the groups are great with H&N Baracuda Match 4.50's. If I can find the right headsize (that does not produce fliers), I think I'm looking at 30mm 7-shot groups at 50yds consistently. Sweet! Can't wait for my pellet headsize checker to arrive!
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https://www.youtube.com/watch?v=eq7jVyBfFqE
Air Arms S510 US .22 Air Arms S410 .22 Weihrauch HW97KT .177 Weihrauch HW95 .177 |
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kruzaroad
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Posted: 17 Jan 2023 at 5:49am |
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Weight will play part. There is a relationship between the extreme weight ranges and head size. I've found.
Flyers should cut right down. It also gives you time to check for head and skirt damage. Skirt damage can be a big thing in some tins. Actual roundness of the head is interesting too. I found a few pellets that measured differnt on one side to the other. The worst was 4.50mm one side and 4.46mm on the other. I imagine that would affect flight chararistics as well. Skirt damage is a biggie with me I'm pretty hard on my judgement of it, it takes very little to lift the skirt to high for effective seal. |
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mercs
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Joined: 25 Apr 2020 Location: Stratford Status: Offline Posts: 341 |
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Posted: 17 Jan 2023 at 2:57pm |
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30 metres warm calm Taranaki evening.
Previously zeroed to this distance. I had been pleased with JSB's so thought I would put them up against a pellet I use regularly. By the numbers the JSB has an edge. I think that I have reached my technical limit with this particular rifle. The Sig has a good kick so not sure if I can manage it any better.
20mm O.D. Sig ASP20 .22 JSB Match Diablo Jumbo Express 0.93 grammes 14.35 grains 5.52mm  21mm O.D. Sig ASP20 .22 RWS Super Field 1.03 grammes 15.9 grains 5.51mm  |
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kruzaroad
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Posted: 17 Jan 2023 at 3:14pm |
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Poppy cock! If your at your technical limit, then it's time to start fine tuning.
( Though from a hunting aspect, those are both killer groups.) A spring change to something that will lessens the kick and by default fpe. Maybe a small tweek in your hold? Its really so close hole on hole it would be a shame not to find a way tighten it. |
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kruzaroad
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Posted: 18 Jan 2023 at 12:12pm |
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So here's the sig after 3 days in its padded hardcase not being used.
Doesn't say much for the anti corrosion on this particular gun. Oh well off hunting, it's been cleaned and reoiled 
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Billbobnz
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Posted: 18 Jan 2023 at 1:41pm |
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Are you serious...!! Wowzers looks like it's had a bath in sea water before being stored...!
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mercs
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Posted: 18 Jan 2023 at 3:28pm |
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Thanks for that, takes the term "patina" a bit far, damn I wonder if there has been a chemical reaction involved.
Amazed it comes through after being oiled, that will need taking back to clean steel and and a full treatment or painting. Rushed to gun safe to check and mine do not have that dreadful disease. Will consider quarantine as a precaution.
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kruzaroad
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Posted: 18 Jan 2023 at 4:35pm |
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Gad think we had enough of quarantines.
It could well be the sweat from hands, but that was wiped and oiled before going away. The 1322 which sits in the same place, except with just a towel wrapped around it is sweet as. That thing use to surface rust like mad till it had been oiled a dozen plus times. I've got a packet of moisture absorbing crystals in the sig hard case too. Guess I'll just keep oiling it Hooe it stops. Maybe I should write to sig, might be able to get a new barrel in .22. I wish. |
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